How can I create a new ENV in Perl

anaconda_wly has asked for the wisdom of the Perl Monks concerning the following question:

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Re: How can I create a new ENV in Perl by Corion (Patriarch) on Apr 01, 2013 at 09:16 UTC
You will have to use the Windows API, and even then, the new environment variable will likely only be seen by processes created after that change. See the Windows documentation on Environment Variables. The likely easiest way to set the variables through the registry is Win32::TieRegistry.	[reply]
Re^2: How can I create a new ENV in Perl by anaconda_wly (Scribe) on Apr 01, 2013 at 09:25 UTC
Thanks for the quick/useful reply. I'll have a try. Thanks if any other replies.	[reply]
Re^2: How can I create a new ENV in Perl by BillKSmith (Monsignor) on Apr 01, 2013 at 12:48 UTC
I doubt that it would help to set the variable directly in the registry. You need to change the registry the same way that the control panel does when it creates new variable. Good luck finding that. Bill	[reply]
Re^3: How can I create a new ENV in Perl by Corion (Patriarch) on Apr 01, 2013 at 19:06 UTC
In the MSDN article I conveniently linked, there is the following paragraph: Calling SetEnvironmentVariable has no effect on the system environment variables. To programmatically add or modify system environment variables, add them to the `HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment` registry key, then broadcast a `WM_SETTINGCHANGE` message with lParam set to the string "Environment". This allows applications, such as the shell, to pick up your updates. From that, I would assume that no luck is needed in finding the appropriate place.	[reply] [d/l] [select]
Re: How can I create a new ENV in Perl by Anonymous Monk on Apr 01, 2013 at 09:54 UTC
maybe related, didn't check :) vienv - Edit local environment variables on Win32, CleanPath , SetEnviron.bat	[reply]


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